Canister Filter as sump?

[reef-junkie]

Originally Posted by clown lover

Yes I did, filled all the media trays with live rock rubble and it worked great as a sealed sump so to speak. The FX 5 should give you tons of flow as well.
I only had lps softies & zoes so I can't comment on how it would work with sps coral though.

I'm wondering how well I would fair if I didn't overload on sps frags.
approx how many lbs of lr would you say you were able to fit into the canister?